class one Flashcards
what is rate produced pressure
HR x SBP
what is cardiac output
HR x stroke volume
what happen to our BP when we exercise
SBP elevated
DBP remain level
what is the best estimate of the increased metabolic demand on the heart
rate produced pressure
this is a repersentation of the myocardial O2 demands
what are the stages of HTN
Normal: Blood pressure is less than 120/80 mm Hg
Elevated: Blood pressure is 120–129/less than 80 mm Hg
Stage 1 hypertension: Blood pressure is 130–139/80–89 mm Hg
Stage 2 hypertension: Blood pressure is 140/90 mm Hg or higher
HTN crisis - 180/120
what is the electrical path of the heart
SA
AV
bundle of his
purkinjie fibers
what is VO2 max
a measurement of how much oxygen a person can use during intense exercise
why do we train at a higher altitude
there is less oxy at higher altitude
the body get used to creating more red blood cells and this is benificial when you come back to sea level
with increase in altitude what happesn to HR, SV, CO, BP
increase in: HR, CO, BP
stable: SV
this is a result of less o2 being available
what is acclimization
this is when we stay at a higher altitude
what happens to HR, SV, CO, BP with acclimization
increase: HR
normal: BP an CO
decrease: SV
under water what happens to our vital signs
BP - decreases
HR - decreases
CO - increases
SV - increase
venous return - increases
- increase in SV
what is vital capacity
how much air we can breath in
what do beta blockers do
decrease HR
complete with nor and epi for the beta agrengenric receptors of the heart
beta blockers are presribe to what hind of pts
htn and cornary artery disease
